Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao li cong snippets" » "cao bi cong snippets", "cao li song snippets", "cao lieu cong snippets", "dao li cong snippets", "hao li cong snippets", "tao li cong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cao li cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao li cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao li cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao li cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.